# Square glass

What is the area of the square window glass with the side 4 dm? Do you know how many cm2 is it?

Result

S =  16 dm2
A =  1600 cm2

#### Solution:

$S=4^2=16 \ \text{dm}^2$
$A=S \cdot \ 10 \cdot \ 10=16 \cdot \ 10 \cdot \ 10=1600 \ \text{cm}^2$

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